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Aristotle - The Organon - index for ANALYTICA POSTERIORA Book 1 Part 29

One can have several demonstrations of the same connexion

  
Paragraph 1 One can have several demonstrations of the same connexion not only by taking from the same series of predication middles which are other than the immediately cohering term e.g. by taking C, D, and F severally to prove A-B - but also by taking a middle from another series.
Paragraph 2 A further point worth investigating is how many ways of proving the same conclusion can be obtained by varying the figure.


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